Question

我使用自定义函数上传按文件分割的文件，如文档here所述。我的问题是在save()上传文件两次后调用handle_uploaded_file()，一次上传到“MEDIA_URL / my_path”目录，一次上传到“MEDIA_URL”。但我想只有一个上传，一个有块。可以强制save()进行“分块”上传吗？或者我应该使用不同的方法？谢谢。

models.py

class ShapeFile(models.Model):
    name = models.CharField(max_length=100)
    srid = models.ForeignKey(SpatialRefSys)
    user = models.ForeignKey(User)
    color_table = models.ForeignKey(ColorTable)
    file = models.FileField(upload_to="my_path")
    class Meta:
        unique_together = ('name', 'user')

forms.py

class UploadForm(ModelForm):
    class Meta:
        model = ShapeFile
        fields = ('name','user','srid','file','color_table')
        widgets = {'srid': TextInput(),
                   'user': HiddenInput()

views.py

def handle_uploaded_file(fileName, filePath):
    with open(filePath, 'wb+') as destination:
        for chunk in fileName.chunks():
            destination.write(chunk)

@login_required
def shapeIng(request):
    if request.method == 'POST':
        form = UploadForm(request.POST, request.FILES)
        if form.is_valid():
            req = request.POST

            # Split uploaded file into chunks
            fileName = request.FILES['file']
            filePath = ShapeFile(file=fileName).file.path
            handle_uploaded_file(fileName, filePath)

            form.save()

            messages.success(request, 'Shapefile upload succesful!')
            return redirect('shapeCreated')
        else:
            messages.error(request, 'Something went wrong uploading Shapefile.')
    else: # request.method == 'GET'
        form = UploadForm(initial={'user': request.user})
    return render_to_response('my_app/base_shapeIngestion.html',
                              {'form': form},
                              context_instance=RequestContext(request))

Answer 1

将您的视图功能更改为：

def testupload2(request):
    if request.method == 'POST':
        file_name=request.FILES['file']
    form = SomeForm(request.POST, request.FILES)
    if form.is_valid():
        dest_file = open('C:/prototype/upload/'+ str(file_name), 'wb+')
        path = 'C:/prototype/upload/'+ str(file_name)
        for chunk in  request.FILES['file'].chunks():
            dest_file.write(chunk)
        dest_file.close()

    t = get_template("testupload2.html")

    lst = os.listdir('C:/downloads/prototype/prototype/upload/')

    html = t.render(Context({'MEDIA_URL':'http://127.0.0.1:8000/site_media/'}))
    return HttpResponse(html)

使用块上传文件：避免两次保存

1 个答案: